News

Heralded photon amplification (HPA) is a teleportation-based protocol that has been proposed as a means to overcome transmission loss for DI-QKD. In a recent Quantum Science and Technology paper we show how HPA for path entangled states and characterise the entanglement before and after loss by exploiting a recently developed displacement-based detection scheme. We demonstrate that by exploiting HPA we are able to reliably maintain high fidelity entangled states over loss-equivalent distances…

Researchers from the University of Geneva have developed a new quantum method for generating random numbers

Our recent paper in Physical Review Applied demonstrates a new quantum random number generator which is simple to implement and achieves high bit rates, yet requires almost no trust in the devices used, leading to strongly improved security.

Image compression breakthrough! Recent insights from the field of quantum information allow us to compress images to a ratio of up to 1:10 whilst conserving the original image information and quality.

Our paper on the first demonstration of a 24-hours relativistic bit commitment was published in Physical Review Letters as an editor's suggestion. Our results were highlighted in the journals Nature and Physics Today, and in the Focus Stories of the American Physical Society website, Physics.

Quantum Vision Project Accepted Ours and five other groups, all from the University of Geneva, have been awarded a Sinergia multidisciplinary Swiss national project. The aim of this ambitious project is to investigate whether our senses, and especially our vision, are sensitive to purely quantum phenomena, like quantum interferences and photon entanglement. ​

Prof. Hugo Zbinden has been awarded the 2016 Heinrich-Greinacher prize from the Physical Institute of the University of Bern. The award was granted in recognition of his ground-breaking work in the fields of quantum optics and quantum cryptography.

His work on "High-performance single-photon detectors and applications in quantum communication", under the direction of Prof. Hugo Zbinden, has received the "J. Wurth Award", which rewards the best PhD thesis in physics. Every year, the physics Faculty of the University of Geneva rewards the best PhD thesis in physics with the "J. Wurth Award". The decision has been officially taken in November. Official website: http://cms.unige.ch/sciences/physique/la-section/p... His thesis is available…

Our paper demonstrating the violation of an Einstein-Podolsky-Rosen steering inequality developed for single-photon path entanglement with displacement-based detection has been published in Physical Review Letters. We use a high-rate source of heralded single-photon path-entangled states, combined with high-efficiency superconducting-based detectors, in a scheme that is free of any post-selection and thus immune to the detection loophole. This result conclusively demonstrates single-photon…